Image sensors and optical devices

Which is a correct technique for HDR (high dynamic range) in image sensors, for scenes containing both bright and dark areas?

  1. AReducing the number of pixels
  2. BRemoving the color filters
  3. CCombining signals with different exposure times or sensitivities
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Answer: C. Combining signals with different exposure times or sensitivities

HDR captures bright areas with short exposures and dark areas with long exposures or high sensitivity, then combines them into an image with fewer blown highlights and crushed shadows. Besides taking multiple shots, there are methods that use pixels or signals with different sensitivities in a single shot. It is an important technology for automotive cameras.

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